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Heterogeneous transformation of peroxyacetylnitrate
Institution:1. School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, PR China;2. Key Laboratory of Health Risk Appraisal for Trace Toxic Chemicals of Zhejiang Province, Ningbo Municipal Center for Disease Control and Prevention, Ningbo, Zhejiang 315010, PR China;1. School of Municipal and Environmental Engineering, Co-Innovation Center for Green Building of Shandong Province, Shandong Jianzhu University, Jinan 250101, China;2. Centre for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China;3. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;4. National Institute of Metrology, Beijing 100029, China;5. Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China;1. College of Chemistry and Molecular Engineering, Research Institute of Environmental Science, Zhengzhou University, Zhengzhou 450001, China;2. Damien High School, 2280 Damien Ave, La Verne, CA 91750, USA
Abstract:The heterogeneous decomposition of peroxyacetylnitrate (PAN) has been investigated using a flow reactor and infrared spectroscopic analysis. The decomposition rate in air due to glass surfaces follows the relation dPAN]/dt = −S/V(PAN] × 7 × 107 + CH3C(O)OO] × 5 × 9012)exp(−9382/T) molecules cm−3 s−1 (S/V=surface to volume ratio). The rate observed for NH4HSO4-covered surfaces is lower than in the glass case. The rate is high enough to affect many laboratory experiments but too slow to have any influence on PAN decomposition under ambient conditions.
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